2023-12-05 03:16:34 +00:00
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from django.db.models import Count
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from django.utils.translation import gettext_lazy as _
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from rest_framework import serializers
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2023-12-18 09:56:16 +00:00
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from common.serializers.fields import ObjectRelatedField, LabeledChoiceField
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2023-12-05 03:16:34 +00:00
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from orgs.mixins.serializers import BulkOrgResourceModelSerializer
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2023-12-18 09:56:16 +00:00
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from .const import label_resource_types
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2023-12-05 03:16:34 +00:00
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from .models import Label, LabeledResource
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__all__ = ['LabelSerializer', 'LabeledResourceSerializer', 'ContentTypeResourceSerializer']
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class LabelSerializer(BulkOrgResourceModelSerializer):
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class Meta:
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model = Label
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2023-12-19 10:46:02 +00:00
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fields = [
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'id', 'name', 'value', 'res_count', 'comment',
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'date_created', 'date_updated'
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]
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2023-12-05 03:16:34 +00:00
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read_only_fields = ('date_created', 'date_updated', 'res_count')
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extra_kwargs = {
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'res_count': {'label': _('Resource count')},
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}
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2023-12-19 10:46:02 +00:00
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@staticmethod
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def validate_name(value):
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if ':' in value or ',' in value:
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raise serializers.ValidationError(_('Cannot contain ":,"'))
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return value
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def validate_value(self, value):
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return self.validate_name(value)
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2023-12-05 03:16:34 +00:00
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@classmethod
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def setup_eager_loading(cls, queryset):
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""" Perform necessary eager loading of data. """
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queryset = queryset.annotate(res_count=Count('labeled_resources'))
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return queryset
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class LabeledResourceSerializer(serializers.ModelSerializer):
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2023-12-18 09:56:16 +00:00
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res_type = LabeledChoiceField(
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choices=[], label=_("Resource type"), source='res_type_id', required=False
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)
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2023-12-19 10:42:44 +00:00
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label = ObjectRelatedField(queryset=Label.objects, attrs=('id', 'display_name'), label=_("Label"))
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2023-12-05 03:16:34 +00:00
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resource = serializers.CharField(label=_("Resource"))
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class Meta:
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model = LabeledResource
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fields = ('id', 'label', 'res_type', 'res_id', 'date_created', 'resource', 'date_updated')
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read_only_fields = ('date_created', 'date_updated', 'resource')
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@classmethod
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def setup_eager_loading(cls, queryset):
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""" Perform necessary eager loading of data. """
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queryset = queryset.select_related('label', 'res_type')
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return queryset
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2023-12-18 09:56:16 +00:00
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.set_res_type_choices()
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def set_res_type_choices(self):
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res_type_field = self.fields.get('res_type')
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if not res_type_field:
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return
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res_type_field.choices = [(ct.id, ct.name) for ct in label_resource_types]
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2023-12-05 03:16:34 +00:00
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class ContentTypeResourceSerializer(serializers.Serializer):
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id = serializers.CharField()
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name = serializers.SerializerMethodField()
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@staticmethod
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def get_name(obj):
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return str(obj)
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